function Welfare(){
    this.eles = $(".welfare_list li a");
    this.img  = $(".img");
    this.hover_img = $(".hover_img");
}
$.extend(Welfare.prototype,{
    init:function(){
        this.hover_img.css({
            display:"none"
        })
        this.eles.on("mouseenter",".img",$.proxy(function(evt){
            var e = evt || window.event;
            var target = e.target || e.srcElement;
            target.parentNode.children[1].style.display="inline-block";
            target.style.display = "none";
        },this))
        this.eles.on("mouseleave",$.proxy(function(){
            this.hover_img.css({
                display:"none"
            })
            this.img.css({
                display:"inline-block"
            })
        },this))
    }
})
var  welfare = new Welfare();
export  {welfare};